I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
campo camp campi campy compo comp gamp kemp
campo amp champy tempo tamp damp samp ramp pampa lamp gamp compo campy campi camp vampy vamp champ shampoo
cam cambia came cameo cammie camo scam